In rare cases, people might develop allergic reactions to caterpillar's hair or bristles that results in difficulty breathing, rapid heart rate, nausea, and in severe cases anaphylactic shock. It's important to note that the severity of the symptoms can vary depending on the individual's sensitivity and the number of bites or stings received. If you are concerned about a specific bite or sting or if symptoms persist or worsen, it is recommended to consult a healthcare professional for proper evaluation and treatment.